Unlike many custom maps, this map pack is pretty well put together. There are no imposible areas, or stupidly frustrating parts that will repeatedly kill you for no reason.

It can be solved completely, without cheats, simply by thinking and exploring.

Although, I did have to noclip once, as I got wedged into a wall between a generator model and a wall, and was unable to move. That doesn't count though, as it was down to a minor mapping error, rather than a stupidly difficult challenge or puzzle.

Thanks, but I figured out that the cube can be momentum'd onto the floor. But it's hard.About my earlier comment about Turrets shooting bullet holes through the companion cube, I found that a quicksave and quickload removes both bullet holes and energy-ball burn marks

The Vital Apparatus Vent will deliver a Weighted Companion Cake in Three. Two. One.*fifty cakes fall out*Time out for a second. That wasn't supposed to happen.

Portal: Still Alive was announced as an exclusive Xbox Live Arcade game at the 2008 E3 convention to be released sometime later in 2008, and will feature new levels and achievements.

The additional content will be drawn from levels from the map pack based on "Portal: The Flash Version" created by We Create Stuff and will contain no additional story-related levels. According to Valve spokesman Doug Lombardi, Valve has been in discussion with Microsoft to bring Portal to Xbox Live Marketplace, but was limited by the amount of bandwidth that Microsoft is willing to allow for such content.